Tuesday, April 21, 2020

Jenkins Installation on Ubuntu

Jenkins is an open source Continuous Integration server capable of orchestrating a chain of actions that help to achieve the Continuous Integration process (and not only) in an automated fashion.

Jenkins is free and is entirely written in Java. Jenkins is a widely used application around the world that has around 300k installations and growing day by day.

It is a server-based application and requires a web server like Apache Tomcat. The reason Jenkins became so popular is that of its monitoring of repeated tasks which arise during the development of a project. For example, if your team is developing a project, Jenkins will continuously test your project builds and show you the errors in early stages of your development.

By using Jenkins, software companies can accelerate their software development process, as Jenkins can automate build and test at a rapid rate. Jenkins supports the complete development lifecycle of software from building, testing, documenting the software, deploying and other stages of a software development lifecycle.


  • Make sure you are logged in as a user with sudo privileges
  • Java 8 or later version up and running
    • sudo apt-get update
    • sudo apt-get install default-jdk
    • sudo java –version
  • Maven is up & running
    • Sudo apt-get install maven
    • Sudo mvn --version

Installation steps:
  • Add repository key to System
    •  wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -
  • Append the Debian package repository address to the server’s sources.list:
    •  sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
  • sudo apt-get update
  • sudo apt-get install Jenkins
  • Start the Jenkins
    • sudo service jenkins start

By default, Jenkins will start on port 8080, find the IP address of your ubuntu using ifconfig command and try hitting http://ip:8080 from your browser to view the Jenkins dashboard.

Above screen is asking for Jenkins initial password which can be retrieved from initialAdminPassword file.

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

From the next screen, click on install suggested plugin which will immediately begin the installation process:

Once done with the installation, you will be asked to set up the first administrative user. You can skip this step and continue as admin using the initial password we used above or we can create the Jenkins user.

Update all the fields and click on save and continue button. The next screen will be instance Configuration page that will ask to confirm the preferred URL for your Jenkins instance. Click Save and Finish.

Click Start using Jenkins to visit the main Jenkins dashboard:

Congratulation! your Jenkins is up and running on your Ubuntu instance.

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